Method of and apparatus for working paper stock



Dec. 9, 1924. 1,5 8,922

A. J. HAUG METHOD OF AND APPARATUS FOR WORKING PAPER STOCK Filed Sept. '7, 1925 2 s t s t 3 Ina/e v' flniom Jfiau by 2 M A. J. HAUG METHOD OF AND APPARATUS FOR WORKING PAPER STOCK 2 Sheets-Sheet 2 Filed Sept. 7, 1925 Patented Dec. 9, 1924.

UNITED STATES 1,518,922 PATENT OFFICE.

AN'roN :r. HAue, or NAsHUA, NEW HAMPSHIRE, AssreNoR TO IMPROVE] AP R MACHINERY coMPANY, or NASHUA, NEW HAMPSHIRE, A CORPORATION or MAINE.

METHOD OF AN D APPARATU Application filed September 7, 1923. Serial No. 661,418.

To all whom it may concern:

Be it known that I, ANTON J. HAUG, a citizen of the United States, and a resident of Nashua, in the county of Hillsborough 6 and State of New Hamphire, have invented an Improvement in Methods of and Apparatus for Working Paper Stock, of which the following description, in connection with the accompanying drawings, is

a specification, like characters on the drawings representing like parts.

This invention relates to methods of and apparatus for working paper stock, and has for its object the provision of improved methods and appliances which may be employed in preparing crude pulp from raw material, in working the crude pulp into a more refined state, in working over and rendering usable tailings or residue from screened stock, or for other purposes.

For illustrative purposes the invention is herein shown embodied in a machine of the general type illustrated in my former Patent No. 1,443,410, dated January 30, 1923, and my co-pending application Serial No. 459,057, filed April 6, 1921.

The invention will be best understood by reference to the following description when taken in connection with the accompanying illustration of one specific embodiment thereof, while its scope will be more particularly pointed out in the appended claims.

In the drawings,

Fig. 1 is an elevation, principally in longitudinal section, showing a machine embodying one form of the invention;

Fig. 2 is a transverse, sectional elevation on line 22 in Fig. 1, the variable transmission and stand therefor being shown in elevation; and V Fig. 3 is a similar section on the line 33 in Fig. 1.

Referring to the drawings and to the embodimentof the invention therein illustrated, I have shown the same exemplified in a. machine of'the type described in my aforesaid application and patent, the same having a body or casing 3 and provided with an internakcylindrical shell 5 carried by suitable supports 7 which rest on the bedplate 9.

The casing is herein fixed, but thesame might have a motion of rotation either with or without bodilyfmovement of the rolls hereinafter referred to. A housing ll secured at one end of the casing contains within it an inlet chamber 13 into which the stock may be introduced through a. suitable inlet passage from an overhead hopper 15, the latter containing a feeding device 17. The stock is progressively advanced from the inlet chamber through the .casing to a discharge chamber 19 formed within the casing 21 secured to the opposite end of the casing 3, there being provided at the bottom of the discharge chamber an outlet passage 23 through which the workedover stock is discharged. p

In its travel through the casing, the stock is subjected to a succession of reducing actions by some crushing agency, preferably by means of heavy rolls 25. Any desired number of rolls may be provided, but herein the machine is equipped with four. The rolls extend lengthwise the cylinder and are adapted to bear against the stock distributed over the inner face thereof, the rolls being carried around the inside of the cylinder by suitable supports, so that they are caused to move bodily In a closed orbital path while also undergoing a suitable rotation, and in their movement to roll over and crush the stock. c

The rolls and their supports are substantially similar to those shown in my aforesaid prior application, being provided with shafts 27 journaled at both ends in bearing boxes 29, which latter are adapted to move radially inwardly or' outwardly and also to permit the rolls to tip or rock more orless. For this purpose the bearing boxes 29 are trunnioned at opposite sides each in a yoke 30, and the latter are mounted to slide radially in pairs of guides provided in spiders 31. The two opposite spiders are keyed to amain driving shaft 33 to rotate therewith, so that when the shaft is rotated it carries with it the spiders, the bearings and the rolls, forcing the latter out against theinner surface of the shell by centrifugal force, while at the same time the rolls are carried bodily through an orbital path within the shell.

A casing 35 at the inlet end of the machine and a casing 37 at the outlet provide respective chambers for the journal supports for the rolls at opposite ends of the machine, these chambers being separated from the pulp-receiving inlet and outlet chambers of the machine by partitions and packing devices. similar to those described in my aforesaid co-pen'ding application.

The illustrated form of machine is also shown equipped with conveying devices 39 for progressively advancing the stock through the machine at a predetermined rate and subjecting it to, a succession of predetermined crushing actions, and with scraping devices 41 for preventing the stock from building up on the rolls, substantially sifnilar to those described in detail in m aforesaid co-pending application.

In a machine of this type, it has been found desirable to impart by extraneous means a rotary movement to the crushing rolls each about its own axis, as well as the described bodily movement through an orbital path. It is often desirable to have this rotary movement of the rolls take place at a speed whichcorresponds to a rolling contact of the roll on the surface of the stock. It may, however, desirable at times to have provision for altering the speed of rotation of the rolls to impart a slight slip thereto either backward or forward with reference to the stock over which the roll is traveling. Where the rolls have been driven, as has sometimes been done,

through .means of a fixed internal gear meshing with pinions carried by the roll shafts, it is impossible to obtain a gearing ratio which will drive the rolls positively at all times with true rolling contact over the stock. .Any slight wear in the surface of the roll reduces the diameter thereof but leaves the gearing ratio unchanged, and thereby provides a speed of rotation different from that of true rolling contact and imparts a backward slip or -draw to the action of the roll. On the other hand, if pulp clings to the roll, the latter may temporarily become greater in diameter and produce a forward slip or. draw with relation to the stock. Theaction of the rollsflwill vary in'respect to this action with different classes of stock. In practice,

it has been found the rolls work most efliciently and with the least consumption of power with any given class of stock at a definite speed of rotation, this speed often closely approximating that which corresponds to rolling contact.

In the illustrated form of the invention, I have provided driving mechanism whereby the rolls may be positively turned while .in contact with the stock but at a speed i which may be varied or adjusted from time to timeiand, when desired, may be made equivalent to the speed of rolling contact.

For this purpose each roll shaft 27 carries at the delivery end of the machine within the casing 37 a pinion 43 meshing with the teeth of an internalgear 45. The

internal gear 45 is carried by a shell 47 which is rotatably mounted within the easlatter is provided, with a worm gear 49 'meshing with the worm 51, the latter carsiredspeed of rotation may be imparted to the rolls. This may be varied from time to time to meet different conditionsof stock, or to allow for wear of the rolls, or to secure exact rolling contact, or any other. desired speed may be provided havj ing for 'its'object either a forward or backward slip of the rolls relative to the stock.

To adjustably drive the internal gear shell, the worm gear shaft carries at its end a beveled pinion meshing with a beveled gear 57, the latter driven by means of friction cone pulleys 59 and 61 and the adjustable belt drive 63, the latter mounted in a suitable frame and constituting a speed varying device for varying at will the speed of rotation of the internal gear shell. The friction cone drive pulley 61 is herein driven from the main driving shaft by means of the belt 65 and driven pulley 67. v

Various-other devices may be employed, all within the scope of this invention, for varying the rotary movement of the rolls, either individually or together. Where a planetary gearingdrive is'utilized, as here? in, movement may be imparted to the internal gear or other gearing member employed by any suitable means. In the il-' lustrated form of the invention, however, the driving movement imparted to the internal'gear or regulating member of the system is not only positive, but may be in either direction so that, within any reasonable limits, any desired speed of the rolls may be had accompanied either by a backward or a forward slip or draw.

While I have herein shown and described for the purposes of illustration one specific embodiment of the invention, it is to be understood that extensive deviations may be made from the form or arrangement of parts herein shown, and that wide departures may be had from the illustrated embodiment and the application herein made of the invention, all without departing from the spirit thereof.

Claims:

1. In a machine for working paper stock or other material, the combination with a ing 37 and has an. extension 48, which stock receiving surface, of one or more rolls, means for moving each roll bodily over the stock upon said surface, means for positively turning the roll while in contact with the stock, and means for varying thespeed of turning movement of the roll.

2. In a machine for working paper stock or other material, the combination with a stock receiving surface, of a roll, means for moving the roll bodily over the stock upon said surface, means for positively and va riabl-y turning the roll as it contacts with the stock, and means for progressively advancing the stock on the surface.

- 3. In a machine for working paper stock or other material, the combination with a stock receiving surface, of a roll, means for moving the roll bodily over the stock upon said surface, and a variable speed drive for positively turning the roll as it contacts with the stock.

4. In a machine for working paper stock or other material, the combination of a cylindrical casing, of one or more rolls extending lengthwise the casing, means for repeatedly presenting paper stock to the same roll in said casing but at differently progressive advanced points in its length, means for moving the roll bodily around the casing, means for positively turning the roll as it is moved, and means for modifying the turning movement.

5. A machine for working paper stock or other material wherein the material is fed continuously to the machine inlet and withdrawn from the outlet thereof, characterized by the employment of one or more crushing rolls moved in an orbital path within the machine, means for turning each roll as it is moved, and means to adjust the turning movement.

6. A machine for working paper stock or other material, wherein the material is fed continuously to the machine inlet and withdrawn from the outlet thereof, characterized by the employment of one or more crushing rolls moved in an orbital path within the machine, and ad'ustable means for positively turning eac roll as it is moved at a speed substantially corresponding to the speed determined by true rolling contact with the stock.

7 A machine for working paper stock or other material, wherein the material is fed continuously to the machine inlet and withdrawn from the outlet thereof, characterized by the employment of one or more crushing rolls moved in an orbital path within the machine, pinions for turning each roll and internal gear meshing with said pinions, and means providing for movement of the internal gear.

8. A machine for working paper stock or other material, wherein the material is, fed continuously to the machine inlet and withdrawn from the outlet thereof, characterized by the employment of one or more crushing rolls moved in an orbital path within the machine, pinions for turning each roll and internal gear meshing with said pinions, and a variable speed drive for rotating said internal gear at a predetermined speed.

' 9. The method of Working paper stock or other material which consists in moving a rolling agency in an orbital path over the stock, positively turning said agency, and adjusting the turning movement to provide substantial rolling contact with the stock.

10. In a. machine for working paper stock or other material, the combination with a cylindrical shell having an inlet and an outlet, of one or more rolls extending lengthwise the shell, supports for the rolls, means to move the supports relative to the shell to produce relative movement-between the rolls and the stock in the cylinder, conveying'devices to advance the stock from the inlet toward'the outlet, means for positively turning said rolls, and means for varying the speed of turning movement thereof.

11. In a machine for working paper stock or other material, the combination with a cylindrical shell having an inlet and an outlet, of one or more rolls extending lengthwisethe shell, supports for the rolls,

means to move the supports relative to the shell toproduce relative movement between the rolls and the stock in the cylinder, conl veying devices to advancethe stock from the inlet to the outlet, means for turning the rolls comprising a rotatable internal gear, and pinions connected one to each roll meshing with said gear.

12. In a machine for working paper stock or other material, the combination with a cylindrical shell having an inlet and an outlet, of one or more rolls extending lengthwise the shell, supports for the rolls, means to move the supports relative to the shell to produce relative movement between the rolls and the stock in the cylinder, conveying devices to advance the stock from the inlet to the outlet, means for turning the rolls comprising a rotatable internal gear, pinions connected one to each roll meshing with said gear, and means to control the rotation of said internal gear.

13. In a machine for working paper stock or other material, the combination within a cylindrical casing of one or more rolls, with supporting means therefor by means of which said rolls are adapted to travel through an orbital path through the interior of said casing, said rolls being supported to. permit a radial inward and outward movement, pinions carried by said rolls, an internal gear meshing with said pinions, and devices for rotatingsaid internal gear.

14. In a machine for working paper stock or other material, a casing, one or more rolls w1th1n the casing, a ournal box for each opposite end of each roll, a rotary support ing devices 39, rolls 25, pinions :43, in-

ternal gear 45, and variable'speed driving mechanism for the latter.

16. In a machine for Working paper stock or other material, the combination with a casing, of a crushing roll, means for movmg the same over the stock contained with in the casing, and Variable speed devices 0 for turning said roll.

17 In a machine for Working paper stock or other material, the combination with a cylindrical casing, of one or more rolls,

means for causing said rolls to travel over 25 the interior of said casing, devices to posi tively turn the rolls in the course of their travel, and variable speed mechanism to vary the speed of turning movement.

In testimony whereof, I have signed my 30 name to this specification.

' ANTON J. HAUG. 

